Improved spring-punch



P.BAUER. SPRING PUNCH. No. 42,064 Patented Mar. 2 9, 1864.

- To all whom it may concern.-

clare that the following is a full, clear, and exits outerend with a conical socket, b, bored UNITED STATES PATENT OFFICE.

PETER BAUER, OF NEWARK, NEW JERSEY.

IMPROVED SPRING-PUNCH.

Specification forming part of Letters Patent No. 42,064, dated March 29, 1864.

Be it known that I, PETER BAUER, of Newark, in the county of Essex and State of New Jersey, have invented a new and Improved Spring-Punch; and I'do hereby-de act description of the san1e,-reference being had to the accompanying drawings, formin'ga part of this specification, in which Figure 1 represents a sectional side eleva tion of my invention. Fig. 2 is a plan -'or top view of the samex Similar letters of reference indicate corresponding parts in both figures.

This invention consists in the arrangement of aconical socket in the outer end of the cutter-jaw, fitted to receive tubes or cutters of difiercnt size, and pr'o'vided with a hollow thumb-screw in such a. manner that by removing said thumb-screw the tube or cutter can be readily removed and replaced by another of different or of the same size.

The invention consists, also, in the application to the'supporting-jaw of a screw-plug of brass, copper, or other soft metal which will not injure the cutting-edge of the cutter, insuch a manner that the face of said screwplug can always be adjusted according to the length of the tube in the cutter-jaw, and when said face is worn out it can be easily filed 0d and readjusted.

The invention consists, finally, in the arran gement ot'a tube or receptacle in or under one of the handles, closed by a screw-plug or other suitable device in such a manner that the diflerent tubes can be readily introduced or taken: out, and that said tubes are always on. hand when they'are required.

To enable others skilled in the art to make and use my invention, I will proceed to describe it.

-A represents a spring-punch made with the jaws B G, which are united by a pivot, a, in the usual manner. The jaw B is provided at out to receive its tubes or cutters c. The upper half-of the socket b is tapped'to receive the thumbscrew d, which bears on the inner end of the tube 0, and holds it down, asclearlyshown in Fig. l of the drawings. This thumb- 1 screw is perforated with a hole through its center equal in diameter to the diameter of the largest tube to be used, so that the blanks or cuttings can pass oft without difficulty. If it is desired to remove the tube and to replace itby a new or other one, the thumb. screw is taken out and the tube .can now be forced out by closing the punch. A series of tubes, 0*, of the same or of different sizes, canthus be used in the same punch, and in order to. have the several tubes always handy I have fitted one of the handles with a receptacle, D, capable of receiving the several tubes. This receptacle may either be soldered to the handle or the handle may be cast hollow, so as to afl'ord room for'said tubes. The mouth of this receptacle. is closed by a screw-plug, which can be readily taken out whenever it is desired to change the tubes. The jaw O is provided witha screw, 9, which is'inserted just opposite the tube in the jaw B. This screw is made of brass, copper,'or other soft metal which-will not injure the cutting-edge of the tubes, and it is so arranged that the face can be. readily adjusted to meet tubes of different lengths, or that when said face iswornfiout it can be readily filed off and readjusted.

The great convenience of this punch and its superiority over other punches of a similar nature is apparent. The tubes are always protected and notliable to be injured when the tool is thrown about. They can be readily changed, and the anvil can always be adjusted to meet the cutting-edge of the tube.:

What I claim as new, and desire to secure by Letters Patent, is-'- I .1. The socket bin the jaw B, in combination with the hollow thumb-screw d and tubes 0, constructed and operating substantially as and for the purpose specified.

2. The adjustable screw-anvil 'g, 'in- "combinationwith the jaws B G, of a punch A, as and for the purpose set forth.

3. The receptaclc' ll), arranged in combina tion with one of the handles of a punch,A,

substantially as and for the purpose described.

PETER BAUER.

Witnesses:

JOHN PosT, JOHN G. PHELPs. 

